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SEISMIC DESIGN & INSTALLATION GUIDE SUSPENDED CEILING SYSTEMS

Australia and New Zealand

Version: December 2019

SEISMIC

BVT Engineering has been engaged by Armstrong Ceiling Solutions to assist in the production of this guide, which has been prepared with consideration of the Australian and New Zealand Standards, listed on Page 5.

Testing of the Armstrong Ceiling Grid Systems was undertaken to determine the compression and tension capacities. Testing of the perimeter fixings and bracing was also undertaken. The values from this testing have been used in this guide.

TABLE OF CONTENTS

WHAT CAUSES SEISMIC ACTIVITY? 4

ABOUT THIS GUIDE 5

SEISMIC DESIGN 6

DESIGNING WITH CONFIDENCE USING ARMSTRONG CEILING SYSTEMS 7

LIMITATIONS AND ASSUMPTIONS 8

SEISMIC DESIGN FORM 9

SEISMIC BRACING: LAYOUT OPTIONS 11

SEISMIC PERIMETER OPTIONS 12

PEAKFORM MAIN RUNNER SEISMIC JOINT CLIP 14

PEAKFORM CROSS TEES SEISMIC JOINT CLIP 15

SEISMIC PERIMETER TRIMS AND ACCESSORIES 16

BACK BRACING OPTIONS 17

BACK BRACING WITH GRIDLOK® 20

SERVICE INTEGRATION AND CLEARANCES 22

REFERENCE GUIDES 23 Building Importance Levels 23 Australian locations Hazard Factor (Z) 25 New Zealand locations Hazard Factor (Z) 26

PREFACE

4 ARMSTRONG SEISMIC DESIGN GUIDE

PLATE TECTONICS

WHAT CAUSES SEISMIC ACTIVITY? The earth’s surface is made up of a series of (Tectonic) plates that move in relation to each other. The lines where these plates meet are called fault lines and movement and stresses at these points can send shock waves through the ground. These shock waves are known as seismic waves and result in vibrations that at their most severe can cause immense damage to buildings and other structures, communication networks and indeed lives.

TECTONIC PLATES

an PlateNoorth America

FucaPlate

uan deFP

Ju e Eurasian PPlate

PCoPlateocos

ibbeaPlate

CaribbP

anate

abAraArabianateatePlate

Pl tIndian

l tndian

PPlate

Philippinenenee

acifiPPlat

Na

fic te

zca S merriSouth Am ican Africrican Plaate

Platelat

NaPla

zca ate atePlat

IIndo-AAustra eateelian Plat

SScotia Plate

Antarctic Plate

Subduction Lateral Sliding Spreading

ABOUT THIS GUIDE The purpose of this guide is to provide preliminary information to support the application of Armstrong suspended grid and panel ceiling systems as per the requirements of NZS 1170.5 and AS 1170.4 – Structural Design Actions – Earthquake actions.

The failure of suspended ceilings that are not designed to seismic standards, as a result of earthquake activity can have catastrophic consequences, such as:

• Significant threat of injury or loss of life due to: - Blocked evacuation paths - Falling services - Live loose electrical wires

• Extensive delays in recommencing business even though the rest of the building structure may not have sustained damage.

A University of Canterbury report on the Performance of Ceilings in the February 2011 Christchurch Earthquake states:

“In buildings that suffered severe structural damage, ceilings and other non-structural components (rather expectedly) failed, but even in buildings with little damage to their structural systems, ceilings were found to be severely damaged. The extent of ceiling damage, where the ceilings were subject to severe shaking, depended on the type of the ceiling system, the size and weight of the ceilings and the interaction of ceilings with other elements.” 1

Wider Applications

In addition to earthquakes, there are several other industries with associated risks (e.g. Blast protection) where the use of correct seismic design will provide additional protection for the ceiling. These include:

Power generation facilities

Defence establishments

Chemical installations

Transport installations (with intermittent vibrations)

The design of Armstrong suspended ceiling grid systems, bracing and fixing types shown in this guide are developed in accordance with the following standards:

AS/NZ 2785: 2000 Suspended Ceiling – Design and installation

AS1170.4: 2007 Structural Design Actions – Earthquake actions in Australia

AS1170.5: 2009 Structural Design Actions – Earthquake actions in New Zealand

NZS 4219: 2009 Seismic Performance Of Engineering Systems In Buildings


SEISMIC

1. Rajesh P. Dhakal, Greg A. MacRae, and Keith Hogg — “PERFORMANCE OF CEILINGS IN THE FEBRUARY 2011 CHRISTCHURCH EARTHQUAKE” (p. 379). BULLETIN OF THE NEW ZEALAND SOCIETY FOR EARTHQUAKE ENGINEERING, Vol. 44, No. 4, December 2011


SEISMIC DESIGN The Design Process

The design team should be responsible for coordinating the design and installation of all sub trade equipment in the plenum and ceiling. The preferred approach, to ensure optimal coordination and productive use of resources, is for seismic design of non-structural components to be completed prior to the project going out to tender. The design team needs to specify the seismic grade of the ceiling and the associated seismic restraint requirements in the tender documents along with:

Bracing Layout

Edge/Perimeter details

Service Integration

Suspension points identified that are clear of services.

Design Coordination Many view a suspended ceiling as a finished surface only and are unware of the potential complexity of the design in the plenum. Consequently, they may not be aware of the possible true cost of a suspended ceiling that has been designed to withstand a Seismic event.

Designers of other components in the plenum may not have full understanding as to the requirements of the suspended ceiling system. Design coordination is possibly the single biggest issue that faces suspended ceiling installation. Seismic Design coordination of mechanical services and other plenum located elements, including lights, air conditioning, cable trays, fire suppression systems etc, with the suspended ceiling is essential. Refer to the drawing and technical detail on Page 22 for more information. In general, the coordination of proper seismic design prior to issuing tender documents will result in:

More accurate costing being achieved

Better installation process

Fewer site variations

Lower overall cost

Less time delays during installation

Fewer site conflicts


DESIGNING WITH CONFIDENCE USING ARMSTRONG CEILING SYSTEMS

Armstrong PeakForm™, Blue Tongue™ and U-Profile Ceiling Systems, including Axiom Pelmets, when installed in conformance with this guide can withstand the forces associated with significant seismic activity or other severe events. An Armstrong PeakForm System provides additional security required for seismic resistance using specifically designed and independently tested elements for minimised installation complexity with maximum performance.

Seismic Testing - Armstrong PeakForm™ Ceiling Systems

Armstrong Ceiling Solutions has partnered with The University at Buffalo in testing the PeakForm Prelude XL 24mm™ and Suprafine 15mm Systems for seismic performance using:

Dynamic Testing – Seismic Qualification by Shake Table Testing

Static Testing – Vertical, Compression, and Tension Loads

The University at Buffalo’s (UB) Structural Engineering and Earthquake Simulation Laboratory (SEESL) is a key equipment site and provides research and engineering collaboration services for the National Science Foundation’s George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES), The Multidisciplinary Centre for Earthquake Engineering Research (MCEER), the Department of Civil, Structural and Environmental Engineering (CSEE). Furthermore, the SEESL facility also provides Research & Development services for industry and has been instrumental in the development of the Armstrong PeakForm Seismic Grid solutions.

Seismic Testing - Armstrong Blue Tongue and U-Profile Ceiling Systems

Independent Static Testing has been conducted on Blue Tongue Aluminium and U-Profile Grid Systems. Vertical, compression and tension load capacities have been determined for these systems and are available as input data for seismic designs.

Structural Engineering and Earthquake Simulation Laboratory - SEESL . SEESL’s twin re-located shake tables


LIMITATIONS AND ASSUMPTIONS Limitations

• This Guide takes into consideration the following Armstrong Suspended Ceiling Grid Systems: PeakForm, Blue Tongue and U-Profile, including Axiom Pelmets, installed in a typical horizontal plane.

• The Armstrong Preliminary Seismic Design does not constitute a producer statement PS-1 Engineering design (NZ), Form 15 or equivalent certified engineered design (Australia).

• Partition walls must not be braced to the ceiling grid. • The Braced Ceiling solutions illustrated in this Guide are indicative only, showing fixed rectangular grid

configurations. Guidance from a qualified structural engineer should be sought for rooms with complex geometry.

• The ‘Back Braced’ diagrams (Page 17 and following) do not apply to narrow corridors or rooms with only one main tee present. Guidance from a qualified structural engineer should be sought for such applications.

Assumptions

• The ceiling grid is classified Part Category P3, (ULS) for NZ. • The ceiling system has a period of less than 0.75 seconds. • The near Fault Factor Maximum of 1.0 has been used for NZ. • The ceiling system has a structural ductility of 1.25 for NZ. • A service load of 3kg/m2 is present as per AS/NZ 2785 Section 3.2 .2 • All individual objects weighing over 10kg shall independently suspended and braced and are not to break

the Tees. • The ‘Fixed and Floating’ diagram (Page 12) assumes a room in which the grid runs at right angles to the wall. • Where a fixed perimeter is specified, the structure is capable of withstanding the line load applied by the

ceiling. • Where back bracing is specified, back braces are installed in accordance with manufacturer's

recommendations. • Design and installation of all systems must be in accordance with details provided in this brochure and other

Armstrong suspension brochures. • Ensure stud wall has noggins installed at ceiling height, this is required for fixing BErC2 clips.

Alternatively, an Armstrong Seismic Shadow Line Wall Angle (Item ALSWA6) can be used where there are no noggins installed at ceiling height.

Considerations

• Ceilings should not be attached to two opposite walls unless there is a seismic gap between them. This is due of the forces that can be induced in the ceiling grid if differential displacements occur between the perimeter structures.

• Ceilings should not be braced to both a wall and the roof/structure above due to differential movement. • If the building is importance level 4 (hospital, police station etc.) a qualified structural engineer must be

consulted in the design of the ceiling.


SEISMIC DESIGN FORM Armstrong Ceilings and BVT Engineering have developed a Seismic Design Calculator to assist with preliminary seismic designs.. This calculator is based on AS 1170.4 2007 and NZ 1170.5 2009 Section 8.

Information to complete the Seismic Design Form

To access this service simply complete our Seismic Design Form (Page 10) and submit along with:

1. Determination of the hazard factor (Z), which will be identified on the construction drawing. If not noted, refer to Pages 25-26 to select hazard factor based on the location of the project

2. Determination of the Site Sub Soil, which will be identified on the construction drawings 3. Building Importance Level will be on the construction drawings.

If not available, refer to Pages 23-24 4. Building heights 5. Ceiling heights 6. Panel type 7. Panel weight /m2 8. Grid type 9. Grid module 10. Direction of Main Runners: This is important as it will effect the Seismic design 11. Services: Ensure you ask the builder if all services, duct work, table trays, sprinklers are being

seismically installed, if not, the installation of a ceiling to Seismic Standards will be ineffective and unsuitable

12. Sectional drawings and RCP’s required in both CAD and PDF

Notes:1. To optimise seismic design, consideration should be given to engage a certified structural engineer. 2. The Armstrong Preliminary Seismic Design does not constitute a producer statement PS-1 Engineering

design (NZ), Form 15 or equivalent certified design (Australia) and cannot be used to support a PS-1, Form 15 or equivalent certified design without consultation with a certified structural engineer.

3. Please contact your local Armstrong Ceilings representative or your local Armstrong Ceilings office for a digital copy of the Seismic Design Form.

4. Submissions of completed Seismic Design Forms and other required data to be made to your local Armstrong Representative.

IT IS THE RESPONSIBILITY OF THE PROJECT ENGINEER TO CHECK ALL INFORMATION SUPPLIED WITH THE ARMSTRONG PRELIMINARY SEISMIC DESIGN

TO ENSURE IT IS CURRENT AND REMAINS RELEVANT FOR THE PROJECT.

■ Contractor Name

■ Telephone

■ Email Address

■ Builders Name

■ Project Name

■ Project Stage

■ Hazard factor (Z)

■ Site Sub soil

■ Building importance level

■ Internal Wind Pressures (per level) as supplied by Structural Engineers

■ Height of the structure

■ Typical storey height

■ Ceiling height

■ Exposed Grid and Panel

■ Ceiling Grid type

■ Ceiling Panel Size

■ Ceiling Panel Type

■ Drywall Grid

■ DGS Module Size: 1200x600mm only ■ Plasterboard Type / weight per m2

■ Weight of light fixtures

■ Weight of A/C grills

■ Direction of Main Bar

■ Weight of insulation

■ Are all services being seismically installed?

■ Copy of RCP in Cad and PDF

■ Copy of building Elevations PDF

SEISMIC DESIGN FORM AS1170.4 Section 8

DateSEISMIC

Cei

ling

heig

ht

Height of structure


SEISMIC BRACING: LAYOUT OPTIONS There are three different options for bracing the ceiling against lateral loading. Options 1 and 2 involve bracing the ceiling to the perimeter and Option 3 involves bracing back to the structure above.

Option 1: Fixed and Floating Perimeter with BERC2 Clips(Perimeter fixing on adjacent edges) BERC2 Clips are used to fix the ceiling to the perimeter on two adjacent sides as shown in Fig 1. BERC 2 Clips are also installed on opposite sides, creating a seismic sliding connection. Lateral loads are transferred from the ceiling to the perimeter through BERC2 perimeter fixing. Ensure stud wall has noggins located at ceiling height, as this is required for attaching BERC2 clips. *(See Note below).

Option 2: Fixed Perimeter with BERC2 Clips(Perimeter fixing on all edges) The ceiling is split up into smaller sections using seismic joints, as illustrated in Fig 2. The ceiling should be fixed to the perimeter on all sides with BERC2 Clips. Lateral loads are transferred from the ceiling to the perimeter via BERC2 Clips. Ensure all stud walls have noggins installed at the ceiling height, as this is required for attaching BERC2 clips. *(See Note below).

Option 3: Back Braced with Floating PerimeterThe ceiling is braced back to the structure above with compression struts and tension wire braces or diagonal tension/compression struts. A seismic sliding joint around the entire perimeter is required as the ceiling should not be braced to both the structure above and the perimeter. Contact your Armstrong Representative for Sliding Joint solutions. See Fig 3. and also refer to Page 17 following, for Back Bracing solutions.

* Note: Alternatively, an Armstrong Seismic Shadow Line Wall Angle (Item ALSWA6) can be used where there are no noggins installed at ceiling height.

1

Fixed Connection

Sliding Connection

1

4

2

Seismic Joint

2

43

1

Fixed Connection

S

1

3

Sliding Connection Around Entire Perimeter

Ceiling GridBraced Back toStructure Above

Fig 2. BERC clips applied to fix all ceiling to perimeter connections as shown

Fig 3. Ceiling Back Bracing, with Sliding Perimeter Connections

Fig 1. BERC2 Clips applied at all ceiling to perimeter connections as shown

XX

600mm c/c

BB

B

B

B

B

B

X X

XX

Floa

ting

Wal

l

B

B

B

Fixed Wall

AAA

X X

Floating Wall

X Suspension Points

MainRunner

MainRunner

B

Fig 4. Fixed Ceiling-Wall Connection With BERC2 Clips. (See also Fig. 7 on Page 13)


200mm Max

25mm19mm

Screw For Sliding Connection

BERC2 Clip

200mm Max

25mm

Tight Screw

BERC2 Clip

SEISMIC PERIMETER SOLUTION FOR OPTIONS 1 AND 2 An Armstrong Seismic PeakForm Grid Solution requires consideration of the following three details at the perimeter:

1. Seismic Perimeter Trim (see Page 16 for options). 2. BERC2 Clip - applied as per Option 1 or 2 on Page 13. The BERC2 Clip also assists the ceiling grid to stay

on module during a seismic event, preventing the ends of Cross Tees and Main Runners from spreading apart and panels being dislodged.

3. Seismic Clearance & Overlap for Sliding Connections: A 19mm clearance between the end of the Grid and the vertical leg of the Perimeter Trim, combined with a 10mm overlap of Grid on the Perimeter Trim is required on two adjacent sides of the ceiling. See Fig 5 below and Fig 6 on Page 13 for details of the sliding joint created by the BERC2 Clip.

Fig 5. Floating (Sliding) Ceiling-Wall Connection With BERC2 Clips (See also Fig 6. on Page 13)


SEISMIC PERIMETER SOLUTION FOR OPTIONS 1 AND 2

Heavy Duty Aluminium Wall Angle – Item ALSWA1: 35x25mm

BERC2 Seismic Clip

Screw Centred (Fastened Loosely to Allow Sliding)

19mm

Wall or Column

Ceiling Panel

Main Runner or CrossTee as Required

Galv Steel Suspension Wire

or Suspension Clip

Ceiling Panel

Main Runner or CrossTee as Required

Wall or Column

Continuous Noggin

Galv Steel Suspension Wire

or Suspension Clip

Heavy Duty Aluminium Wall Angle – Item ALSWA1: 35x25mm

Screw fix through either hole of BERC2 Clip

Fig 6. Floating (Sliding) Ceiling-Wall Connection With BERC2 Clips

Fig 7. Fixed Ceiling-Wall Connection With BERC2 Clips

Ensure stud wall has noggins installed at ceiling height, as this is required for fixing BERC2 clips. Alternatively, an Armstrong Seismic Shadow Line Wall Angle (Item ALSWA6) can be used where there are no noggins installed at ceiling height.


PEAKFORM MAIN RUNNER SEISMIC JOINT CLIP How to install the PeakForm Main Runner Seismic (Separation) Joint Clip FOR OPTION 2: FIXED PERIMETER

Option 2: Fixed Perimeter Seismic Solution (Page 11) involves the installation of a continuous line of 20mm Main Runner Seismic Joints (Fig.9). The seismic design will determine the location of the Seismic Separation Joints. Installation of the Seismic Joint is an easy process as per the following steps:

Step 1: Install the PeakForm Grid System completely. Follow typical procedures as per the Installation Guide, except that all Main Runner joints must line up across the ceiling space. See Fig 9. below.

Step 2: Prepare the Main Runner joint to receive the separation Joint Clip by cutting off the Superlock clip (end detail or tag) from the left side of the connection and removing 20mm from the end of the Main Runner on the right.

Step 3: Install the clip using screws provided. Screws #1 and #2 install through the holes in the clip and into the right hand Main Runner.

Step 4: Align the indexing nib with the lower hole on the left hand Runner and insert screws #3 and #4 into the upper holes.

Step 5: Snap the Expansion Sleeve over the gap at the face of the Main Runner and crimp the four corners with a pair of pliers.

#1#2

#3

#4

Indexing

Nib

Expansion Sleeve

Main Runner Main Runner

1200 Cross Tee

1200

600

Fig.9 Location of row of PEAKFORM Main Runner Seismic Joint Clips as per Seismic Design

Fig. 8 Installing a PeakForm Main Runner Seismic Joint Clip


Fig.10. Location of row of PEAKFORM Cross Tee Seismic Joint Clips as per Seismic Design

PEAKFORM CROSS TEES SEISMIC JOINT CLIP

How to install the Peakform Cross Tee Seismic (Separation) Joint Clip FOR OPTION 2: FIXED PERIMETER

Option 2: Fixed Perimeter Seismic Solution (Page 11) involves the installation of a continuous line of Cross Tee Seismic Joints. The seismic design will determine the location of these Seismic Separation Joints. Installation of the Seismic Joints is an easy process as per the following steps:

Step 1: Install the PeakForm Grid System completely. Follow typical procedures as per the Installation Guide.

Step 2: Determine which run of Main Runners to create the seismic separation joint. NOTE: The Seismic Joint Clip allows for Cross Tees to move back and forth along their axis during a seismic event.

Step 3: Attach two adjacent sides of each section of the divided ceiling to the perimeter. Where these sections touch the wall the attachment may be by means of the BERC2 clip with a tight screw. Sections that do not touch walls on two adjacent sides must be braced to structure.

Step 4: At each Cross Tee - Main Runner intersection, designated for the seismic separation, remove the Cross Tee clips (end locking tabs) by cutting with tin snips from above. NOTE: This should be done one intersection at a time or the grid system will fall apart.

Step 5: Asemble the two sides of joint clip into one unit.

Step 6: Snap completed assembly over the bulb of the Main Runner at the intersection of the Cross Tees.

Step 7: Insert a 6mm long M6 screw through slot in clip, into the upper XL2 clip stake hole. Use vertical stamp mark below the horizontal slot to properly position the screw within the clip. Install one screw from each side of the assembled clip to hold the proper shape. Do not allow screw threads to strip out the stake hole.

Main Runner

Main Runner

1200 Cross Tee

1200

600

Seismic Joint Clip

Main RunnerCross Tee

Cross Tee

PeakForm - Cross Tee Seismic Joint Clip

125mm

43mm

Fig. 11. Installing a PEAKFORM Cross Tee Seismic Joint Clip

Fig. 12 (Step 5-7) Assembly and attachment of the Cross Tee Seismic Joint Clip


SEISMIC PERIMETER TRIMS AND ACCESSORIES

ITEM NO DESCRIPTION DIMENSIONS QUANTITY/ LENGTH (MM) CARTON

ALSWA1 Heavy Duty Aluminium Wall Angle 3600 20 35 x 25mm

ALSWA4 Heavy Duty Aluminium Shadow Line 3600 20 Wall Angle 30 x 35mm

ALSWA6 Seismic Aluminium Shadow Line 3600 20 Wall Angle 30 x 35mm (no lip)

PM50 Floating Perimeter Trim 3600 20 50 x 25mm

ARM-017 Perimeter Trim Joining Clip 20

ARM-058 Roll-In-Clip 20

BPGM1245B BERC2 Clip 100

BPGM1247 PeakForm Cross Tee Seismic 200 Joint Clip (24mm)

BPGM1246 PeakForm Main Runner Seismic 100 Joint Clip (24mm)

BPGM1248 Expansion Sleeve 15mm 100

BPGM1249 Expansion Sleeve 24mm 100

35

25

30

2510

20

2510

2.50

1.50

25.00

1.50

50.0

0


Building Structure

Concrete Slab

Steel Purlins

Timber Joists

Connection Type

2x HILTI HUS-3 M6x40 Anchors

2x 10g Tek Screws

2x No.8 x 51 Screws

Table 1 - Fixing Specification

BACK BRACING OPTIONS This section is to be used only for bracing where the grid is braced back to the structure above. This option is required when the forces in the grid are too high to allow perimeter fixing. Choose a brace type from the options below and calculate the maximum ceiling area allowed per brace.

Installation of Bracing

It is important that once the brace type has been chosen, it is essential that it is properly installed as per the following guidelines and manufacturers instructions. The following criteria must be met when installing the brace.

• The compression strut must be connected to the Main Runner within 50mm of a Cross Tee connection. • Diagonal wires/ stud are to be angled at no more than 45 degrees from the ceiling plane. • Braces to be spaced @ 1200mm centres, typically a drawing shall be provided to show locations. • A ceiling may not be both back braced and fixed to perimeter. • Tension wires to have a minimum of 3 turns.

Bracing Type:

Brace A – Rondo 64x0.50 BMT Stud Strut with 4/2.5 dia wire diagonals.

Seismic Brace - Pictorial View

A

Brace Stud Installed within 100mm of Tee Junction

Cross Tee Main Tee

2x 10g Tek Screws

Building Structure160

Fixings to Structure to be Installed in Accordance with Table 1

Fixings to be Installed in Accordance with Table 1

2x 10g Tek Screws

Head Track64 x 1.15 BMT

64 x 0.55mmSteel Stud

45º

Plenum Height: Refer to Layout Drawing

Unistrut P1546 45ºFitting or Equivalent

200mmMax Wire Spacing

2.5mm Galv Steel Wire (4 Off Per Steel Stud)Ø

Seismic Brace Construction Details

Seismic Brace A - Detail A


BACK BRACING OPTIONS Brace B – Rondo 64x0.50 BMT Strut with 2/64x0.50 BMT Stud diagonals.

Building Structure

Concrete Slab

Steel Purlins

Timber Joists

Connection Type

2x HILTI HUS-3 M6x40 Anchors

4x 10g Tek Screws

4x No.8 x 51 Screws


Connection Detail 1

Connection Detail 2

Connection Detail 3

Building Structure

Ceiling Structure


A

64 x 0.5 BMTSteel Stud

Cross Tee

Main Runner

3 x 10g Tek Screws

4 x 10g Tek Screws(2 Either Side)

Main Tee


4 x 10g Tek Screws

45ºTyp

4 x 10g Tek Screws



Building Structure

4 x 10g Tek Screws

Building Structure




4 x 10g Tek Screws


Fixings to Structure to be Installed in Accordance

with Table 1

Seismic Brace B - Pictorial View

Connection Detail 3

Connection Detail 1

Connection Detail 2

Seismic Brace B - ConstructionDetail A Rear View

Seismic Brace B - ConstructionDetail A Front View


BACK BRACING OPTIONS Brace C – Rondo 92x0.75 BMT Strut with 2/92x0.75 BMT Stud diagonals.

Building Structure

Concrete Slab

Steel Purlins

Timber Joists

Connection Type

2x M6x30 Dynabolt Anchors

4x 14g Tek Screws

4x No.8 x 51 Screws


4 x 14g Tek Screws



Building Structure


Building Structure

Fixings to Structure to be Installed in Accordance

with Table 1

4 x 14g Tek Screws



4 x 14g Tek Screws


Main Tee

45º

4 x 14g Tek Screws



Cross Tee

Main Runner

4 x 14g Tek Screws(2 Either Side)

Max 50mm Clearance Between Brace and Tee Junction

3 x 14g Tek Screws

Connection Detail 1

Connection Detail 2

Connection Detail 3

Building Structure

Ceiling Structure


A

Seismic Brace C - Pictorial View

Connection Detail 3

Connection Detail 1

Connection Detail 2

Seismic Brace C - ConstructionDetail A Rear View

Seismic Brace C - ConstructionDetail A Front View


BACK BRACING WITH GRIDLOK®

Gridlok Bracing components have been designed and tested by BVT Engineering for application with Armstrong PeakForm™ Grid Systems, providing consistent brace capacity, saving labor and installation time.

GRIDLOK® WITH PEAKFORM™Designed and tested to provide a consistent maximum 280kg/f of bracing capacity to the higher profile Armstrong PeakForm and DRYWALL Grid Systems. Simple click fit and screw off process dramatically reduces time required to complete back bracing, saving cost to project. Plenum height chart provides guidance on steel stud BMT required for bracing arms (Refer GRIDLOK® brochure for details). Features the ability to rotate the unit though 360° minimising service clashes. CODE: GRD-10P

Fix Studs to GRIDLOK® Bracket with 4x 10g Wafer Tek Screws

Fix GRIDLOK® Bracket to Armstrong PeakForm Ceiling Tee with 4x 10g Wafer Tek Screws

Main Runner

Cross Tee

45°

Fix to Structure in Accordance with GRIDLOK® Specification

64x0.5 BMT or 92x0.75 BMT Stud



50mm MAX


GRIDLOK® WITH U-PROFILE Designed and tested to provide a consistent maximum 280kg/f of bracing capacity to the Armstrong U-PROFILE system. Consistency in load capabilities is the key feature, while the ease of installation will dramatically reduce install times. Plenum height chart provide guidance on steel stud BMT required for bracing arms (Refer GRIDLOK® brochure for details). Get a better result in less time. Features the ability to rotate the unit though 360° minimising service clashes. CODE: GRD-10U

Fix GRIDLOK® to Armstrong U-Profile with 4x10g Wafer Tek Screws

U-Profile

50mm MAX

45°

Fix to Structure in Accordance with GRIDLOK® Specification




Fix Studs to GRIDLOK® Bracket with 4x 10g Wafer Tek Screws

H-Bar

Locking Clip

H-Bar Hanger


SERVICE INTEGRATION AND CLEARANCES Clearances for laterally unrestrained services in accordance with NZS 4219:2009

CONDITION BEING CONSIDERED MINIMUM CLEARANCE (MM) HORIZONTAL VERTICAL

Unrestrained component to unrestrained component 250 50

Unrestrained component to restrained component 150 50

Restrained component to restrained component 50 50

Penetration through structure (such as walls and floor) 50 50

NOTE: Ceiling hangers and braces are considered to be restrained components for the purposes of this table.

CLEARANCES Services within the ceiling can be either braced or unbraced. Different clearances are required between braced or unbraced services. When ceiling bracing is required (as per Option 3 from Page 11), it is essential that the bracing layout and services should be coordinated.

In the absence of an Australian Standard, designers should refer to NZS 4219: 2009 (Seismic Performance Of Engineering Systems In Buildings) when considering suitable bracing of services located in the plenum space.

150 min

150 min

50

min

20

0 m

ax h

ange

r le

ngth

600 max

Cable tray

Hanger

Cross teeMain runner

40

0 m

ax h

ange

r le

ngth

150 min

150 min150 min

25

150 min

Exposed two way grid ceiling

(plaster board ceiling similar)

No clearance required

30

0 m

ax

Clearance (typ) Clearance (typ)Clearance (typ)

HVAC duct

Unistrut trapeze hangerClearance required

15

0 m

ax

Han

ger

leng

th

Rigid sprinkler dropper

Flexible sprinkler dropper

15

0 m

ax

Han

ger

leng

th


IMPORTANCE LEVEL SPECIFIC STRUCTUREDESCRIPTION OF BUILDING TYPE

Importance level 1

Importance level 2

Importance level 3

• Ancillary buildings not for human habitation • Minor storage facilities • Backcountry huts

• All buildings and facilities except those listed in importance levels 1, 3, 4, and 5

• Buildings where more than 300 people congregate in 1 area

• Buildings with primary school, secondary school, or daycare facilities with a capacity greater than 250

• Buildings with tertiary or adult education facilities with a capacity greater than 500

• Health care facilities with a capacity of 50 or more residents but not having surgery or emergency treatment facilities

• Jails and detention facilities • Any other building with a capacity of 5 000

or more people• Buildings for power generating facilities,

water treatment for potable water, wastewater treatment facilities, and other public utilities facilities not included in importance level 4

• Buildings not included in importance level 4 or 5 containing sufficient quantities of highly toxic gas or explosive materials capable of causing acutely hazardous conditions that do not extend beyond property boundaries

Buildings posing low risk to human life or the environment, or a low economic cost, should the building fail. These are typically small non- habitable buildings, such as sheds, barns, and the like, that are not normally occupied, though they may have occupants from time to time.

Buildings posing normal risk to human life or the environment, or a normal economic cost, should the building fail. These are typical residential, commercial, and industrial buildings.

Buildings of a higher level of societal benefit or importance, or with higher levels of risk- significant factors to building occupants. These buildings have increased performance requirements because they may house large numbers of people, vulnerable populations, or occupants with other risk factors, or fulfil a role of increased importance to the local community or to society in general.

REFERENCE GUIDES

BUILDING IMPORTANCE LEVELS The Building Code defines the significance of a building by its Importance Level (IL), which is related to the consequences of failure. There are five levels of importance, considered by the importance of the building to society.


IMPORTANCE LEVEL SPECIFIC STRUCTUREDESCRIPTION OF BUILDING TYPE

Importance level 4

Importance level 5

• Hospitals and other health care facilities having surgery or emergency treatment facilities

• Fire, rescue, and police stations and emergency vehicle garages

• Buildings intended to be used as emergency shelters

• Buildings intended by the owner to contribute to emergency preparedness, or to be used for communication, and operation centres in an emergency, and other facilities required for emergency response

• Power generating stations and other utilities required as emergency backup facilities for importance level 3 structures

• Buildings housing highly toxic gas or explosive materials capable of causing acutely hazardous conditions that extend beyond property boundaries

• Aviation control towers, air traffic control centres, and emergency aircraft hangars

• Buildings having critical national defence functions

• Water treatment facilities required to maintain water pressure for fire suppression

• Ancillary buildings (including, but not limited to, communication towers, fuel storage tanks or other structures housing or supporting water or other fire suppression material or equipment) required for operation of importance level 4 structures during an emergency

• Major dams • Extremely hazardous facilities

Buildings that are essential to post-disaster recovery or associated with hazardous facilities.

Buildings whose failure poses catastrophic risk to a large area (eg, 100 km2) or a large number of people (eg, 100 000).


CITY/TOWN Z CITY/TOWN Z CITY/TOWN Z

Adelaide 0.10 Albany 0.08 Albury/Wodonga 0.09 Alice Springs 0.08 Ballarat 0.08 Bathurst 0.08 Bendigo 0.09 Brisbane 0.08 Broome 0.12 Bundaberg 0.11 Burnie 0.08 Cairns 0.08 Camden 0.09 Canberra 0.08 Carnrvon 0.09 Coffs Harbour 0.08 Cooma 0.08 Dampier 0.12 Darwin 0.09 Derby 0.09 Dubbo 0.08 Esperance 0.09 Geelong 0.10

Geraldton 0.09 Gladstone 0.09 Gold Coast 0.08 Gosford 0.09 Grafton 0.08 Gippsland 0.10 Goulburn 0.09 Hobart 0.08 Karratha 0.12 Katoomba 0.09 Latrobe Valley 0.10 Launceston 0.08 Lismore 0.08 Lorne 0.10 Mackay 0.08 Maitland 0.10 Melbourne 0.08 Mittagong 0.09 Morisset 0.10 Newcastle 0.11 Noosa 0.08 Orange 0.09 Perth 0.08

Port Augusta 0.11 Port Lincoln 0.10 Port Hedland 0.12 Port Macquarie 0.08 Port Pirie 0.10 Robe 0.10 Rockhampton 0.08 Shepparton 0.09 Sydney 0.08 Tamworth 0.08 Taree 0.08 Tennant Creek 0.13 Toowoomba 0.08 Townsville 0.08 Tweed Heads 0.08 Uluru 0.08 Wagga Wagga 0.09 Wangaratta 0.09 Whyalla 0.09 Wollongong 0.09 Woomera 0.08 Wyndham 0.09 Wyong 0.10

Meekering region Ballidu 0.15 Corrigin 0.14 Cunderdin 0.22 Dowerin 0.20

Goomalling 0.16 Kellererrin 0.14 Meekering 0.20 Northam 0.14

Wongan Hills 0.15 Wickepin 0.15 York 0.14

Islands Christmas Islands 0.15 Cocos Islands 0.08 Heard Island 0.10

Lord Howe Isalnd 0.08 Macquarie Island 0.60 Norfolk Island 0.08

AUSTRALIAN LOCATIONS HAZARD FACTOR (Z) The Z factor is the seismic hazard factor that is applied to a location. It is a fundamental value used to determine the design seismic actions for buildings.


NEW ZEALAND LOCATIONS HAZARD FACTOR (Z) The Z factor is the seismic hazard factor that is applied to a location. It is a fundamental value used to determine the design seismic actions for buildings.

* Denotes Z value has been adjusted to account for higher return period required in these areas.

Akaroa 0.3 Alexandra 0.21 Arrowtown 0.3 Arthurs Pass 0.6 Ashburton 0.2 Auckland 0.13 Balclutha 0.13 Blenheim 0.33 Bluff 0.15 Bulls 0.31 Cambridge 0.18 Cheviot 0.4 Christchurch 0.396* Cromwell 0.24 Dannevirke 0.42 Darfield 0.396* Dargaville 0.13 Dunedin 0.13 Eastbourne-Point Howard 0.4 Fairlie 0.24 Feilding 0.37 Fox Glacier 0.44 Foxton/Foxton Beach 0.36 Franz Josef 0.44 Geraldine 0.19 Gisborne 0.36 Gore 0.18 Greymouth 0.37 Hamilton 0.16 Hanmer Springs 0.55 Harihari 0.46 Hastings 0.39 Hawera 0.18 Hokitika 0.45 Huntly 0.15 Hutt Valley 0.4 Inglewood 0.18 Invercargill 0.17 Kaikohe 0.13 Kaikoura 0.42 Kaitaia 0.13 Kawerau 0.29 Levin 0.4

Mangakino 0.21 Manukau City 0.13 Marton 0.3 Masterton 0.42 Matamata 0.19 Mataura 0.17 Milford Sound 0.54 Morrinsville 0.18 Mosgiel 0.13 Motueka 0.26 Mount Maunganui 0.2 Mt Cook 0.38 Murchison 0.34 Murupara 0.3 Napier 0.38 Nelson 0.27 New Plymouth 0.18 Ngaruawahia 0.15 Oamaru 0.13 Oban 0.14 Ohakune 0.27 Opotiki 0.3 Opunake 0.18 Otaki 0.4 Otira 0.6 Otorohanga 0.17 Paeroa 0.18 Pahiatua 0.42 Paihia/Russell 0.13 Palmerston North 0.38 Palmerston 0.13 Paraparaumu 0.4 Patea 0.19 Picton 0.3 Porirua 0.4 Pukekohe 0.13 Putaruru 0.21 Queenstown 0.32 Raetihi 0.26 Rangiora 0.4356* Reefton 0.37 Riverton 0.2 Rotorua 0.24

Ruatoria 0.33 Seddon 0.4 Springs Junction 0.45 St Arnaud 0.36 Stratford 0.18 Taihape 0.33 Takaka 0.23 Taumarunui 0.21 Taupo 0.28 Tauranga 0.2 Te Anau 0.36 Te Aroha 0.18 Te Awamutu 0.17 Te Kuiti 0.18 Te Puke 0.22 Temuka 0.17 Thames 0.16 Timaru 0.15 Tokoroa 0.21 Turangi 0.27 Twizel 0.27 Upper Hutt 0.42 Waihi 0.18 Waikanae 0.4 Waimate 0.14 Wainuiomata 0.4 Waiouru 0.29 Waipawa 0.41 Waipukurau 0.41 Wairoa 0.37 Waitara 0.18 Waiuku 0.13 Wanaka 0.3 Wanganui 0.25 Ward 0.4 Warkworth 0.13 Wellington 0.4 Wellington CBD 0.4 Westport 0.3 Whakatane 0.3 Whangarei 0.13 Winton 0.2 Woodville 0.41

CITY/TOWN Z CITY/TOWN Z CITY/TOWN Z

2019 ACS Australia

Produced 17 December 2019

Armstrong Ceiling Solutions (Australia) Pty Ltd NSW/ACT Armstrong Ceiling Solutions (Australia) Pty Ltd Unit 4, 1 Basalt Road, Pemulwuy NSW 2145 Telephone (02) 9748 1588 Facsimile (02) 9748 7244

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New Zealand Forman Building Systems Ltd. 20 Vestey Drive, Mount Wellington, Auckland 1060 Telephone +64 (9) 276 4000 Facsimile +64 (9) 276 414

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